US6365701B1 - Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge - Google Patents

Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge Download PDF

Info

Publication number
US6365701B1
US6365701B1 US09/321,111 US32111199A US6365701B1 US 6365701 B1 US6365701 B1 US 6365701B1 US 32111199 A US32111199 A US 32111199A US 6365701 B1 US6365701 B1 US 6365701B1
Authority
US
United States
Prior art keywords
ink
absorbing member
resin material
phenolic antioxidant
jet recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09/321,111
Other languages
English (en)
Inventor
Hiroki Hayashi
Hajime Yamamoto
Eiichiro Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAYASHI, HIROKI, SHIMIZU, EIICHIRO, YAMAMOTO, HAJIME
Priority to US10/062,550 priority Critical patent/US6634739B2/en
Application granted granted Critical
Publication of US6365701B1 publication Critical patent/US6365701B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17506—Refilling of the cartridge
    • B41J2/17509—Whilst mounted in the printer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/03—Specific materials used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/22—Manufacturing print heads

Definitions

  • the present invention relates to members with which an ink comes into contact (hereinafter referred to as “ink-contacting members”), such as ink-absorbing members, ink tanks and ink cartridges which are used in ink-jet recording apparatus.
  • ink-contacting members such as ink-absorbing members, ink tanks and ink cartridges which are used in ink-jet recording apparatus.
  • An ink-jet recording apparatus has a general construction that an ink tank for storing an ink therein, and an ink-jet recording head portion for ejecting the ink from the ink tank to conduct printing are connected to each other directly or through an ink-feeding member such as a tube.
  • resin materials, metallic materials, rubber materials and/or the like have heretofore been used for members always coming into contact with an ink.
  • the resin materials have preferably been used from the viewpoints of cost and processability.
  • the resin materials include polyolefins, ABS, PS, PET, PVC, etc. Of these resin materials, the polyolefins are particularly preferably utilized from the viewpoints of the chemical resistance, the easiness to be recycled and the costs.
  • the polyolefins include polyethylene, polypropylene and ethylene-propylene copolymers.
  • additives are generally added to such a resin material, as needed, for the purpose of stabilizing its quality.
  • the resin materials may be oxidized by heat, light, oxygen or the like during their manufacturing process or processing process, or after the processing to cause decomposition or deterioration (autoxidation). Therefore, it is desirable to add an antioxidant to the resin materials taking the stability of quality into consideration.
  • Chain initiation RH ⁇ R• Chain propagation: R• + O 2 ⁇ ROO• ROO• + RH ⁇ ROOH + R• Chain transfer: ROOH ⁇ RO• + •OH RH + •OH ⁇ ROO• + RO• + H 2 O RO• + RH ⁇ ROH + R• Chain termination: R• + R• ⁇ R-R R• + RO• ⁇ ROR RO• + •OH ⁇ ROH.
  • An antioxidant is added for the purpose of preventing the autoxidizing action. It is also desirable to add a radical scavenger to the resin materials in order to scavenge radicals generated at the initial chain propagation step of the autoxidizing action.
  • a radical scavenger include phenolic antioxidants and amine type antioxidants.
  • An ink-jet recording head portion of an ink-jet recording apparatus will now be described.
  • An energy-generating member such as a piezoelectric element or electrothermal converter is used as a member for applying a pressure for ejecting an ink in the ink-jet recording head.
  • a thermal ink-jet recording head in which an electrothermal converter is used as the energy-generating member will be described.
  • an extremely small amount of ink adjacent to the electrothermal converter is rapidly heated by the electrothermal converter, whereby the ink is bubbled.
  • the ink is ejected toward a recording medium such as paper from ink ejection orifices by a pressure generated by this bubbling, thereby conducting recording.
  • An ink-jet recording head 51 has several to several tens of, and further several hundreds of ink ejection orifices 52 at its surface opposite to a recording medium such as paper (two orifices thereof being illustrated in FIG. 5 ).
  • the ink-jet recording head 51 is also provided with ink flow paths 53 in respective communication with the ink ejection orifices 52 , and energy-generating members for ejecting an ink, or thin film resistors 55 as electrothermal converters in this case are formed in correspondence with the respective ink flow paths 53 on a substrate 54 which makes up the ink-jet recording head 51 .
  • Each of the thin film resistors 55 rapidly generates heat by electric pulses applied in response to drive data to bubble the ink adjacent to the thin film resistor 55 .
  • the ink is ejected from the ink ejection orifice 52 following the formation of bubbles by this bubbling.
  • a common liquid chamber 56 commonly connected to the ink flow paths 53 is provided at the respective ink flow paths 53 , and the ink stored in the liquid chamber is fed to the ink flow paths 53 in response to the ejecting operation in the respective ink flow paths 53 .
  • ink-contacting members in an ink-jet recording apparatus are generally constructed by plural members such as an energy-generating member and an ink feed tube, and these members slightly differ in wettability with inks from each other, so that the flow of the ink passing through the ink-contacting member may become unstable.
  • the ink is ejected at a high speed in particular, therefore, the supply of the ink to the ink flow path may become unstable, and so the ejection velocity of the ink is reduced or made irregular. Accordingly, such an ink becomes liable to hold bubbles therein and hence has a possibility that the size of ink droplets may become varied, or the ejection direction of the ink may be disordered, resulting in deterioration of print quality.
  • an ink-jet recording method has recently been required to output an image of photograph-like image quality and hence to output a more bright or clearer color-image. Therefore, it has been required that the impact accuracy of an ink when conducting printing on a recording medium is improved, and that droplets of the ink ejected are made smaller. Therefore, it is necessary to more smooth the flow of the ink than before so as not to cause the retention of bubbles.
  • 61-137750 has proposed a method for preventing the retention of bubbles, in which an ink-feeding member in an ink-jet recording apparatus is subjected to a lamination treatment with a compound having both hydrophilic group and hydrophobic group, thereby enhancing the wettability of the ink-feeding member with inks.
  • Japanese Patent Application Laid-Open No. 6-71885 has proposed a method for preventing the retention of bubbles, in which ions are implanted into a part of an ink-jet recording apparatus, with which an ink comes into contact, by ion implantation to conduct a hydrophilicity-imparting treatment, thereby enhancing the wettability of the ink-contacting member with inks.
  • the above method comes to increase production cost, since a step of treating the ink-contacting part or member must be added upon the production of the ink-jet recording apparatus.
  • an object of the present invention to provide an ink-contacting member by which the flow of an ink within an ink-jet recording apparatus can be simply smoothed without adding a new third component for an ink-jet recording head used only for the purpose of solving the above-described problems and naturally without adding a step attendant on the addition of the third component, thereby preventing printing failure and an ink breaking phenomenon due to the retention of bubbles to provide high-quality images stably.
  • Another object of the present invention is to provide an ink-absorbing member which permits achieving the stable recording of a high-quality image.
  • a further object of the present invention is to provide an ink tank which permits printing a high-quality image on a recording medium stably.
  • a still further object of the present invention is to provide an ink-jet cartridge useful in printing a high-quality image on a recording medium stably.
  • a yet still further object of the present invention is to provide an ink tank which can be used in recording excellent images stably.
  • a yet still further object of the present invention is to provide an ink-contacting member, an ink-absorbing member, an ink tank and an ink cartridge which permit achieving a further improvement of printing stability.
  • the present inventors have carried out an extensive investigation as to components of ink-jet printers with a view toward achieving the above objects. As a result, it has been found that when polyethylene, to which a phenolic antioxidant having an isocyanurate skeleton has been added, is used for an ink-contacting member, a substance having delicate wettability is eluted in an ink.
  • the present invention has been led to completion on the basis of a quite new point of view that attention is paid to the component eluted out of the ink-contacting member for overcoming the above-described problems.
  • an ink-contacting member used in an ink-jet recording apparatus which comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula
  • an ink-absorbing member used in an ink-jet recording apparatus which comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula (I).
  • an ink tank used in an ink-jet recording apparatus comprising an ink-absorbing member capable of holding an ink therein, and a casing housing the ink-absorbing member therein and having an opening part communicating with the air, wherein the ink-absorbing member comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula (I).
  • an ink-jet cartridge comprising an ink-absorbing member capable of holding an ink therein, an ink tank housing the ink-absorbing member therein, and an ink-jet recording head for ejecting the ink to be fed from the ink tank, wherein the ink-absorbing member comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula (I).
  • an ink tank capable of storing an ink to be fed to an ink-jet recording head, wherein at least a part of the ink tank, with which an ink comes into contact, comprises, as a principal component, a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula (I).
  • the resin material may preferably be polyolefin, and the ink-contacting member may preferably be composed of an aggregate of polyolefin fibers.
  • the polyolefin may preferably be polypropylene or polyethylene.
  • FIG. 1 is an exploded perspective view of an ink-jet cartridge according to the present invention.
  • FIG. 2 is a cross-sectional view of a fiber making up an ink-absorbing member according to the present invention.
  • FIGS. 3A and 3B are a conceptual view of an ink-absorbing member according to the present invention, and an enlarged view illustrating the structure thereof, respectively.
  • FIG. 4 is a conceptual view of an ink-jet recording apparatus using ink-contacting members according to the present invention.
  • FIG. 5 is a conceptual view of an ink-jet recording head.
  • An ink-contacting member comprises a resin material obtained by adding a phenolic antioxidant having the isocyanurate skeleton described below.
  • the use of such an ink-contacting member permits improving the wettability between the ink-absorbing member and inks used and can exhibit the effect of effectively preventing printing failure and an ink breaking phenomenon due to the retention of bubbles.
  • phenolic antioxidant having the isocyanurate skeleton described above include tris(4-tert-butyl-2,6-dimethyl-3-hydroxybenzyl)-isocyanurate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)-isocyanurate and tris(2-(3′,5′-di-tert-butyl-4′-hydroxyhydro-cinnamoyloxy)ethyl)isocyanurate.
  • tris(4-tert-butyl-2,6-dimethyl-3-hydroxybenzyl)isocyanurate is particularly preferred.
  • antioxidants are generally added in a proportion of from 0.01 to 1 part by weight per 100 parts by weight of the resin.
  • the decomposed product eluted in the ink by the decomposition at the part of the isocyanurate skeleton as shown in the above decomposition reaction formula is considered to become a sort of substance having a surface-active effect, in which the moiety of a hydroxyl group of phenol becomes hydrophilic, and the moiety of an alkyl group becomes hydrophobic. Therefore, this decomposed product acts on a part of a surface coming into contact with the ink within an ink-jet recording head, said part being poor in wettability, thereby making up the difference in wettability between the ink and the surface coming into contact with the ink.
  • the effect of the present invention is always brought about on the surface coming into contact with the ink because the above-described substance is eluted in the ink and exists therein.
  • the effect is brought about even at a site of the ink-contacting member, which is not specially coated so as to have hydrophilicity. Even when printing is conducted at a high speed, the generation of bubbles can be prevented because the flow of the ink itself is stabilized. Further, since the wetting effect of this substance is not so high as surfactants, the substance does not change the penetrability of the ink into the surface of paper to the degree that the quality of a print is changed.
  • the resin material obtained by adding the phenolic antioxidant having the isocyanurate skeleton can be formed or molded by any conventionally-known forming or molding method such as extrusion or injection molding into an ink-contacting member according to the present invention, such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-contacting member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-contacting member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-absorbing member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-absorbing member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-absorbing member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-absorbing member such as an ink-absorbing member, ink container bag or ink feed tube.
  • an ink-absorbing member such as an ink-
  • FIG. 1 is an exploded perspective view schematically illustrating an ink-jet cartridge equipped with ink-absorbing members to which the present invention may be applied.
  • the ink-jet cartridge 100 is composed of an ink-jet recording head 3 from which inks of yellow (Y), magenta (M) and cyan (C) colors are separately ejected, and an ink tank 5 detachably installed to the ink-jet recording head 3 .
  • the ink-jet recording head 3 is connected to the ink tank 5 through ink feed tubes 3 a , 3 b and 3 c provided correspondingly to the respective colors.
  • the inks are fed to the ink-jet recording head 3 through their corresponding ink feed tubes.
  • the interior of a container making up the casing 2 together with a lid member 4 is partitioned into 3 chambers by two partition members 2 a and 2 b , and the ink-absorbing members 1 a , 1 b and 1 c , which respectively hold the Y, M and C inks therein, are held in the respective chambers.
  • An opening part (not illustrated) communicating with the air is provided in each of the chambers so as to communicate the interior of the casing 2 with the air.
  • the external shape of the ink tank 5 is so designed that a recess 2 c is provided in a part of the casing 2 for avoiding interference with the interior of an apparatus when the ink tank 5 is installed in the apparatus. From the viewpoint of the amount of an ink to be contained, all the three chambers are shaped according to the recess, and so the partition members 2 a and 2 b are formed so as to have a bent portion at a part thereof.
  • the ink-absorbing members 1 a , 1 b and 1 c respectively held in regions (hereinafter referred to as the interiors of the casing, or the chambers for holding the ink-absorbing members) surrounded by the casing 2 and partition members 2 a and 2 b of the ink tank 5 each have an external surface equivalent or corresponding to the configuration of the internal surface (hereinafter referred to as the internal surface of the casing) of its corresponding chamber for holding the ink-absorbing member, and are formed by compressing a composite fiber formed by covering a polypropylene core 21 with a polyethylene shell 22 at a weight ratio of 1:1 as illustrated in FIG. 2, so as to conform to the shapes of the respective chambers in the casing 2 and thermoforming their surfaces.
  • a continuous, elastic fiber aggregate in the form of a rod or plate is molded.
  • the continuous fiber aggregate is then cut by a cutter into standard units to form fiber masses.
  • the fiber mass is inserted into a mold having a shape conforming to the internal configuration of the chamber for holding the ink-absorbing member in the ink tank 5 (almost the same size as or a somewhat larger size than the chamber) to compress it, and then heated in a heating oven, thereby forming an ink-absorbing member 1 .
  • plural fiber masses may be inserted into the mold according to the form and size of the ink tank 5 to laminate them, and then thermoformed. After that manner, the ink-absorbing member 1 according to the form and size of the tank may be formed with ease.
  • the ink-absorbing member 1 is taken out of the mold and inserted into the chamber for holding the ink-absorbing member, and the lid 4 is fitted, thereby completing the ink tank 5 .
  • the temperature of the heating oven may be optional so far as it is higher than the melting point of the polyethylene fiber 22 as a shell, but lower than the melting point of the polypropylene fiber 21 as a core.
  • the temperature of the heating oven be from 135° C. to 155° C.
  • the heating time can be controlled according to necessary strength for the ink-absorbing member.
  • the ink-absorbing member 1 and the casing 2 of the ink tank are preferably formed with homogeneous materials, for example, polyolefin resins, from the viewpoint of recycle.
  • the label is also preferably formed with a homogeneous material.
  • the ink-absorbing members 1 a , 1 b and 1 c are so constructed that the polyethylene fiber is melted by applying heat to serve as an adhesive, and so three-dimensionally interlocking intersections of the polypropylene fibers are fixed, thereby forming a fiber mass capable of developing strength.
  • FIG. 4 illustrates an exemplary ink-jet recording apparatus equipped with an ink tank having an ink container portion in the form of a bag.
  • reference numeral 41 indicates an ink-jet recording head having ejection orifices 41 a for ejecting an ink.
  • This ink-jet recording head 41 is mounted on a carriage (not illustrated) to conduct record scanning upon conducting recording on a recording medium or the like.
  • Reference numeral 42 indicates an ink tank replaceably installed in the recording apparatus, and 42 a a flexible ink container bag for holding an ink used in recording.
  • Reference character 42 b indicates a waste ink container portion for receiving a waste ink, which will be described subsequently.
  • An opening part 43 communicating with the air is provided in the ink tank 42 , whereby the change in shape of the bag-like ink container 42 a with the consumption of the ink becomes feasible.
  • Reference numeral 44 indicates a recovery means for recovering an ink ejecting function, which is provided outside a record scanning region of the ink-jet recording head 41 and has a cap 45 for covering an ink ejection orifice 41 a .
  • the recovery of the ink ejection orifice 41 a is intended to solve clogging and the like at the ejection orifice 41 a by subjecting an ejection opening part to suction through the cap 45 by means of a pump 46 .
  • Reference numeral 47 indicates an ink subtank mounted on the carriage, on which the ink-jet recording head is mounted, or the like.
  • the ink subtank 47 is a temporary ink storage part provided in the course of an ink feed line for feeding the ink from the ink tank 42 to the ink-jet recording head 41 .
  • An air layer is provided at the upper part within this ink subtank 47 .
  • Reference character 47 a designates an ink-feeding part for feeding the ink in the ink subtank 47 to the ink-jet recording head 41 , and 47 b an ink inlet part for introducing the ink in the ink tank 42 into the ink subtank 47 .
  • Reference character 47 c indicates an outlet part for discharging air and the ink in the ink subtank 47 therefrom for controlling an ink quantity in the ink subtank 47 .
  • the outlet part 47 c is provided so as to be located above the ink inlet part 47 b in a direction of gravity, while the ink-feeding part 47 a is provided so as to be located below the ink inlet part 47 b in a direction of gravity.
  • the above air layer is situated above the ink outlet part 47 c .
  • the discharge of the ink and the like from the ink subtank 47 is made by a pressure change caused by the pump 46 .
  • the ink discharged from the ink subtank 47 and cap 45 by means of the pump 46 is stored in the waste ink container portion 42 b through an ink tube 48 .
  • an ink level is normally kept constant to maintain a difference of elevation from the ink-jet recording head 41 , thereby realizing stable generation of negative pressure. Since the ink subtank 47 is of a closed type, the ink is successively fed from the ink tank 42 to the ink-jet recording head 41 through the ink tubes 48 and 48 a . The rocking of the ink within the ink subtank 47 caused upon movement of the carriage due to record scanning or the like is reduced to some extent because the air layer has a damper-like effect.
  • At least one, preferably, all of the various ink-contacting members described above are formed mainly with a resin material obtained by adding the phenolic antioxidant having the isocyanurate skeleton according to the present invention.
  • the resin materials obtained by adding the phenolic antioxidant having the isocyanurate skeleton are used for ink-contacting members such as ink-absorbing members, ink tanks and ink cartridges, whereby they can be provided as ink-contacting members having the effect of smoothing the flow of an ink within an ink-jet recording head to make the retention of bubbles difficult.
  • a phenolic antioxidant having the isocyanurate skeleton [tris(4-tert-butyl-2,6-dimethyl-3-hydroxybenzyl)isocyanurate] was added in an amount of about 0.1 parts by weight only to polyethylene as a material for the shell with which an ink comes into direct contact.
  • the ink-absorbing members 1 were then held in a casing 2 of an ink tank to form an ink tank 5 , and respective inks were then charged into the absorbing members.
  • An ink-jet recording head equipped with an ink ejection structure was then fitted to the ink tank to produce an ink cartridge 100 (Example A).
  • Example B Another ink cartridge obtained by heating the above ink cartridge 100 at a temperature of 70° C. for 24 hours so as to facilitate the elution of a decomposition product of the phenolic antioxidant having the isocyanurate skeleton from the ink-absorbing members 1 in the respective inks, and a further ink cartridge (Comparative Example A), in which the phenolic antioxidant having the isocyanurate skeleton [tris(4-tert-butyl-2,6-dimethyl-3-hydroxybenzyl)isocyanurate] was not added to polyethylene, were then provided.
  • ink ejection conditions were as follows. Namely, a process of conducting recovery operation by ink suction by a printer itself after every fifth whole solid printing on A4-sized paper to print a pattern for evaluation of print quality on the paper was conducted repeatedly. The results are shown in Table 1.
  • Example A As shown in Table 1, it is understood that good images were obtained more stably in Examples using the ink-contacting members according to the present invention than in Comparative Example.
  • Example A and Comparative Example A the deterioration of print quality was observed in the course of the test. Therefore, the interior of the common liquid chamber was observed through the ink ejection orifice. Slight bubbles were then observed in corners of the common liquid chamber in both examples.
  • the constitution according to Comparative Example A required plural times of recovery operation to recover the print quality.
  • the print quality was able to be recovered by one recovery operation of the printer in Example A. As described above, it is understood that even when the deterioration of print quality is observed, the print quality is recovered with greater ease in Example A.
  • Example B the excellent print result was obtained in Example B in which the ink cartridge was subjected to the heat treatment. It is therefore considered that the elution of a decomposition product of the phenolic antioxidant having the isocyanurate skeleton was facilitated due to the heat history of the ink cartridge to obtain a better effect.
  • the material for the ink-absorbing members is not limited to the composite fiber of the core-shell structure composed of at least two polyolefins as described in the above Example. At least two materials may be separately formed into fibers, and these fibers may be mixed before use. It goes without saying that the compositional ratio of the two materials is also not limited to 1:1, and a simple fiber composed of one material may be used.
  • the present invention is also not limited to the structure that one material is used as an adhesive by heating it at a prescribed temperature to fix three-dimensionally-interlocking intersections of the fibers formed of the other material, thereby developing strength.
  • the material for forming the ink-absorbing member and the like may be composed of only one material, and its structure may also be in the form of a nonwoven fabric such as the conventionally-known felt.
  • Such a structure is effective for both ink-feeding ability and decrease in leftover ink.
  • the ink-absorbing members were separately held in a casing of an ink tank, and an ink was charged into the ink tank.
  • An ink-jet recording head was fitted to the ink tanks thus obtained to produce ink cartridges.
  • Each of the ink cartridges was left to stand for 24 hours in an environment of 70° C. so as to facilitate the elution of the phenolic antioxidant from the ink-absorbing member into the ink.
  • the ink in the tank was then drawn out up to the ink ejection orifices of the ink cartridge and left to stand at ordinary temperature for 10 days as it is. With respect to the respective ink cartridges after left to stand for 10 days, the degree of deposition of components in the ink about the ink ejection orifices was visually observed. The results are shown in Table 2.
  • each of the ink cartridges after left to stand for 10 days was installed in an ink-jet printer to repeatedly conduct a process of conducting recovery operation by ink suction by the printer itself after every fifth whole solid printing on A4-sized paper to print a pattern for evaluation of print quality on the paper, thereby observing the quality of the thus-obtained prints until the ink ran out.
  • Table 2 The results are shown in Table 2.
  • the deposition of components in the ink about the ink ejection orifices was such a degree that it can be scarcely observed by visual inspection even when the ink cartridge was left to stand at ordinary temperature for 10 days in the case where the maximum experienced temperature of the resin was controlled to 240° C. In the case where the maximum experienced temperature was controlled to 270° C., the deposition of components in the ink was somewhat observed about the ink ejection orifices. In the cases where the maximum experienced temperatures were controlled to 300° C. and 330°, respectively, the deposition of components in the ink was observed. However, in each case, the deposit of components in the ink about the ink ejection orifices did not affect the print quality. In addition, with respect to the improvement of print quality by virtue of the improvement of wettability by using the ink-contacting member comprising the resin material containing the phenolic antioxidant having the isocyanurate skeleton, its effect was confirmed.
  • the maximum experienced temperature of the resin material, from which the ink-contacting member is formed be controlled so as not to exceed 330° C., preferably 240° C., since the deposition of components in the ink about the ink ejection orifices is more effectively prevented.
  • an ink container bag 42 a , an ink tube 48 and a container for directly receiving an ink, such as a subtank 47 , with which an ink to be fed to an ink-jet recording head comes into contact are formed from a resin material obtained by adding the phenolic antioxidant having the isocyanurate skeleton according to the present invention, thereby achieving the same effect as in Examples 1 and 2.
  • the ink container bag, ink tube and container for directly holding an ink are also not limited to the forms shown in these examples or application examples, and the present invention may be applied to various other forms.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Ink Jet (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
US09/321,111 1998-05-29 1999-05-27 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge Expired - Lifetime US6365701B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/062,550 US6634739B2 (en) 1998-05-29 2002-02-05 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP10-148598 1998-05-29
JP14859898 1998-05-29
JP11-144207 1999-05-25
JP14420799A JP4208343B2 (ja) 1998-05-29 1999-05-25 インク接液部材、インク吸収体、インクタンク及びインクジェットカートリッジ

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/062,550 Division US6634739B2 (en) 1998-05-29 2002-02-05 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge

Publications (1)

Publication Number Publication Date
US6365701B1 true US6365701B1 (en) 2002-04-02

Family

ID=26475699

Family Applications (2)

Application Number Title Priority Date Filing Date
US09/321,111 Expired - Lifetime US6365701B1 (en) 1998-05-29 1999-05-27 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge
US10/062,550 Expired - Lifetime US6634739B2 (en) 1998-05-29 2002-02-05 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10/062,550 Expired - Lifetime US6634739B2 (en) 1998-05-29 2002-02-05 Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge

Country Status (6)

Country Link
US (2) US6365701B1 (enExample)
EP (1) EP0960732A3 (enExample)
JP (1) JP4208343B2 (enExample)
KR (1) KR100343235B1 (enExample)
AU (1) AU742220B2 (enExample)
CA (1) CA2272810C (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6776478B1 (en) 2003-06-18 2004-08-17 Lexmark International, Inc. Ink source regulator for an inkjet printer
US6786580B1 (en) 2003-06-18 2004-09-07 Lexmark International, Inc. Submersible ink source regulator for an inkjet printer
US6796644B1 (en) 2003-06-18 2004-09-28 Lexmark International, Inc. Ink source regulator for an inkjet printer
US6817707B1 (en) 2003-06-18 2004-11-16 Lexmark International, Inc. Pressure controlled ink jet printhead assembly
US20040257412A1 (en) * 2003-06-18 2004-12-23 Anderson James D. Sealed fluidic interfaces for an ink source regulator for an inkjet printer
US20040257401A1 (en) * 2003-06-18 2004-12-23 Anderson James Daniel Single piece filtration for an ink jet print head
US6837577B1 (en) 2003-06-18 2005-01-04 Lexmark International, Inc. Ink source regulator for an inkjet printer
US20070273735A1 (en) * 2006-05-24 2007-11-29 Canon Kabushiki Kaisha Ink tank for ink jet recording device
US20070282043A1 (en) * 2006-05-31 2007-12-06 Canon Kabushiki Kaisha Inkjet ink reservoir
US20100110153A1 (en) * 2005-09-12 2010-05-06 Fujifilm Corporation Ink unit including ink and ink-wetted member

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4282043B2 (ja) * 1999-12-06 2009-06-17 キヤノン株式会社 記録液体供給通路、記録液体収納容器、およびこれらを備える記録液体供給装置、並びにその表面改質方法
US7888275B2 (en) * 2005-01-21 2011-02-15 Filtrona Porous Technologies Corp. Porous composite materials comprising a plurality of bonded fiber component structures
JP2002273903A (ja) * 2001-01-15 2002-09-25 Konica Corp インクジェットプリンタ用インク容器及びインクジェットプリンタ用インク供給システム
JP3667296B2 (ja) 2001-05-10 2005-07-06 キヤノン株式会社 インクタンク
JP3667295B2 (ja) 2001-05-10 2005-07-06 キヤノン株式会社 インクタンク
US7290869B2 (en) * 2003-07-25 2007-11-06 Seiko Epson Corporation Liquid container
JP4790995B2 (ja) * 2004-03-19 2011-10-12 株式会社テクノメイト スラリー希釈装置
JP4561203B2 (ja) 2004-06-30 2010-10-13 セイコーエプソン株式会社 インクジェットプリンタ及びインクジェット記録方法
US20060044368A1 (en) * 2004-08-31 2006-03-02 Kuo-Hau Kao Bulk-capacity continuous feed printer ink container pack
JP4662827B2 (ja) * 2005-08-22 2011-03-30 富士フイルム株式会社 インクとインク接液部材を含むインクユニット
KR100726426B1 (ko) * 2006-03-22 2007-06-11 삼성전자주식회사 잉크카트리지 및 그 제조방법
JP2008087194A (ja) * 2006-09-29 2008-04-17 Brother Ind Ltd インクジェットプリンタ
JP2010023486A (ja) * 2008-06-17 2010-02-04 Canon Inc 液体吐出ヘッド及びそれを用いた記録装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839274A (en) 1969-11-03 1974-10-01 Goodrich Co B F Polyolefins stabilized with thiopropionamides and phenols
US4025486A (en) 1973-10-15 1977-05-24 The B. F. Goodrich Company Hydroxyphenylalkyleneyl isocyanurate/pentaerythritol phosphite combinations as ultraviolet light stabilizers for polyolefins
WO1982002169A1 (en) 1980-12-22 1982-07-08 Kletecka George Hindered phenolic antioxidants and diazacycloalkane uv stabilizers in polymeric films
FR2512453A1 (fr) 1981-09-07 1983-03-11 Toa Nenryo Kogyo Kk Composition polyolefinique ayant une resistance amelioree aux radiations et son utilisation pour les instruments medicaux
JPS61137750A (ja) 1984-12-11 1986-06-25 Ricoh Co Ltd インクジエツト・プリンタ−におけるインク供給系用部材
EP0238140A2 (en) 1986-03-19 1987-09-23 Akzo N.V. Polyester resin composition with excellent heat resistance
JPS639550A (ja) 1986-07-01 1988-01-16 Ricoh Co Ltd インクジエツトヘツド
JPH01170675A (ja) 1987-12-26 1989-07-05 Canon Inc 記録液
JPH01170674A (ja) 1987-12-26 1989-07-05 Canon Inc 記録液
EP0492463A2 (en) 1990-12-21 1992-07-01 Sumitomo Chemical Company, Limited Polyolefin resin composition
JPH058405A (ja) 1990-11-30 1993-01-19 Canon Inc 複数吸液部材を備えたインク供給容器とそれを備えたインクジエツト記録ヘツド
EP0563578A1 (en) 1992-03-30 1993-10-06 R.T. VANDERBILT COMPANY, Inc. Color stabilization of filled polyolefins
JPH0671885A (ja) 1992-08-31 1994-03-15 Canon Inc インクジェット記録ヘッド、その製造方法、及び記録装置
WO1998003340A1 (en) 1996-07-24 1998-01-29 Dataproducts Corporation Cartridge for supplying liquid to a print head

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439564A (en) * 1982-09-29 1984-03-27 The B. F. Goodrich Co. 5-Membered cyclic phosphonates and compositions thereof
US4931811A (en) * 1989-01-31 1990-06-05 Hewlett-Packard Company Thermal ink jet pen having a feedtube with improved sizing and operational with a minimum of depriming
JP3183146B2 (ja) * 1995-04-10 2001-07-03 富士ゼロックス株式会社 インクタンクおよび記録装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839274A (en) 1969-11-03 1974-10-01 Goodrich Co B F Polyolefins stabilized with thiopropionamides and phenols
US4025486A (en) 1973-10-15 1977-05-24 The B. F. Goodrich Company Hydroxyphenylalkyleneyl isocyanurate/pentaerythritol phosphite combinations as ultraviolet light stabilizers for polyolefins
WO1982002169A1 (en) 1980-12-22 1982-07-08 Kletecka George Hindered phenolic antioxidants and diazacycloalkane uv stabilizers in polymeric films
FR2512453A1 (fr) 1981-09-07 1983-03-11 Toa Nenryo Kogyo Kk Composition polyolefinique ayant une resistance amelioree aux radiations et son utilisation pour les instruments medicaux
JPS61137750A (ja) 1984-12-11 1986-06-25 Ricoh Co Ltd インクジエツト・プリンタ−におけるインク供給系用部材
EP0238140A2 (en) 1986-03-19 1987-09-23 Akzo N.V. Polyester resin composition with excellent heat resistance
JPS639550A (ja) 1986-07-01 1988-01-16 Ricoh Co Ltd インクジエツトヘツド
JPH01170675A (ja) 1987-12-26 1989-07-05 Canon Inc 記録液
JPH01170674A (ja) 1987-12-26 1989-07-05 Canon Inc 記録液
JPH058405A (ja) 1990-11-30 1993-01-19 Canon Inc 複数吸液部材を備えたインク供給容器とそれを備えたインクジエツト記録ヘツド
EP0492463A2 (en) 1990-12-21 1992-07-01 Sumitomo Chemical Company, Limited Polyolefin resin composition
EP0563578A1 (en) 1992-03-30 1993-10-06 R.T. VANDERBILT COMPANY, Inc. Color stabilization of filled polyolefins
JPH0671885A (ja) 1992-08-31 1994-03-15 Canon Inc インクジェット記録ヘッド、その製造方法、及び記録装置
WO1998003340A1 (en) 1996-07-24 1998-01-29 Dataproducts Corporation Cartridge for supplying liquid to a print head

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Chem Abstract: 112:8832 "Emulsion jet printing inks" Takeshi et al 1989 111:216134 "Water thinned inks for ink-jet printing" "Takeshi et al" 1989. *
Chem Abstract: 112:8832 "Emulsion jet printing inks" Takeshi et al 1989 111:216134 "Water thinred inks for ink-jet printing" "Takeshi et al" 1989.

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6837577B1 (en) 2003-06-18 2005-01-04 Lexmark International, Inc. Ink source regulator for an inkjet printer
US20060012643A1 (en) * 2003-06-18 2006-01-19 Lexmark International, Inc. Sealed fluidic interfaces for an ink source regulator for an inkjet printer
US6796644B1 (en) 2003-06-18 2004-09-28 Lexmark International, Inc. Ink source regulator for an inkjet printer
US6817707B1 (en) 2003-06-18 2004-11-16 Lexmark International, Inc. Pressure controlled ink jet printhead assembly
US20040257412A1 (en) * 2003-06-18 2004-12-23 Anderson James D. Sealed fluidic interfaces for an ink source regulator for an inkjet printer
US20040257401A1 (en) * 2003-06-18 2004-12-23 Anderson James Daniel Single piece filtration for an ink jet print head
US7147314B2 (en) 2003-06-18 2006-12-12 Lexmark International, Inc. Single piece filtration for an ink jet print head
US6776478B1 (en) 2003-06-18 2004-08-17 Lexmark International, Inc. Ink source regulator for an inkjet printer
US6786580B1 (en) 2003-06-18 2004-09-07 Lexmark International, Inc. Submersible ink source regulator for an inkjet printer
US20100110153A1 (en) * 2005-09-12 2010-05-06 Fujifilm Corporation Ink unit including ink and ink-wetted member
US20070273735A1 (en) * 2006-05-24 2007-11-29 Canon Kabushiki Kaisha Ink tank for ink jet recording device
US8038274B2 (en) * 2006-05-24 2011-10-18 Canon Kabushiki Kaisha Ink tank for ink jet recording device
US7850296B2 (en) 2006-05-31 2010-12-14 Canon Kabushiki Kaisha Inkjet ink reservoir
US20070282043A1 (en) * 2006-05-31 2007-12-06 Canon Kabushiki Kaisha Inkjet ink reservoir

Also Published As

Publication number Publication date
KR100343235B1 (ko) 2002-07-11
EP0960732A3 (en) 2000-01-19
JP4208343B2 (ja) 2009-01-14
AU742220B2 (en) 2001-12-20
JP2000043290A (ja) 2000-02-15
CA2272810A1 (en) 1999-11-29
US20020145651A1 (en) 2002-10-10
KR19990088671A (ko) 1999-12-27
US6634739B2 (en) 2003-10-21
CA2272810C (en) 2003-10-14
AU3226699A (en) 1999-12-09
EP0960732A2 (en) 1999-12-01

Similar Documents

Publication Publication Date Title
US6365701B1 (en) Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge
AU2003248447B2 (en) Ink Container, Recording Head and Recording Device Using Same
US6698871B1 (en) Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge, and ink-jet recording apparatus using the same
DE69331500T2 (de) Tintenbehälter und Tintenstrahlaufzeichnungsgerät mit einem solchen Behälter
US9776417B2 (en) Cartridge and liquid ejection apparatus
CN102381041B (zh) 液体收容容器、液体喷射系统、以及液体供给系统
US7997708B2 (en) Ink-cartridge for printers and ink refilling method
CN102336062B (zh) 液体收纳容器、液体喷射系统以及液体供给系统
US6196671B1 (en) Ink-jet cartridge for an ink jet printer having air ingestion control
JPH0639166B2 (ja) 記録器具
KR20080057165A (ko) 잉크젯 기록 방법
US7475978B2 (en) Recording liquid, liquid cartridge, liquid ejection cartridge, liquid ejection apparatus, and liquid ejection method
EP1586608B1 (en) Recording liquid, liquid cartridge, liquid ejection cartridge, liquid ejection unit and method of liquid ejection
US20170120601A1 (en) Ink jet recording method and ink jet recording apparatus
JPH11240182A (ja) インク接液部材、インク吸収体、インクタンク、インクジェットカートリッジ、及びインクジェット記録装置
US7445320B2 (en) Ink cartridge for ink-jet printer
US20250042164A1 (en) Ink container and system
US20240100847A1 (en) Printing-agent container and printing-agent container set
CN211808462U (zh) 墨罐和喷墨打印机
US20250042171A1 (en) Liquid container
US20250296346A1 (en) Liquid container, printing apparatus, and printing system
US20250042163A1 (en) Ink container
CN1152782C (zh) 设有气泡储存室的墨水盒及其制作方法
AU2017426451B2 (en) Image forming apparatus and image forming system
HK1100542A1 (zh) 用於喷墨记录装置的墨盒

Legal Events

Date Code Title Description
AS Assignment

Owner name: CANON KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAYASHI, HIROKI;SHIMIZU, EIICHIRO;YAMAMOTO, HAJIME;REEL/FRAME:010127/0773

Effective date: 19990622

STCF Information on status: patent grant

Free format text: PATENTED CASE

CC Certificate of correction
FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12